Sectional drier.



-No-l 840,543.

APPLIOATION FILED 00m21.190s.

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.UNITED STATES y PATENT oEEroE. l FREDERICK G. WISEIEEL, OF INDlANAPOI/JIS, INDIANA.

S-ECTIONAL* DRIER.

Specification of Letters Patent.

Patented Jan. 8,1997..

application-filed October 8,1906. Serial No'. 388,068.

housesj, garbage, and other materials in which there is a large amount of moisturedifliculty is experienced by reason of the corrosive action of the material being dried, which results in a rapid deterioration of the inner linin ofthe drier, vso that the cost of repairs an maintenance of such amachine is very considerable.

The object of my invention is to provide a construction in which 'the' active heating-surface shall be composed ofl a plurality of pipes individually and removably held in position by such means that different portions of each pipe may be successively-exposed, so that after one portion of a pipe has been exposed to the'corrosive action of the drying material this portion may be withdrawn from such action and another portion exposed.

Further objects of my invention are to provide a construction in which individual tubes may be readily removed and renewed without disturbing the remaining tubes, to provide meansfor allowing an active circulation oflieated air through the drying mass, to provide an improved form of Hight for the stirring-shaft, and to provide such improvements in details of construction as may be hereinafter pointed out.

The accompanying drawings illustrate my invention.

Figure 1 is a transverse vertical section; Fig. 2, an elevation of the receiving end; Fig. 3, a longitudinal section; Fig. 4, 'a perspective view of my improved flight, and Fig. 5- a perspective detail of one of the diaphragms between two adjacent pipes.

The drier consists of a body or casing composed of a pair of sides 10 and a pair of ends 11 and 12, the receiving end 11 being provided With a central opening closed by a detachable plate 11 while the discharge end 12 is also provided with a central opening covered by a detachable plate 12. Formed on the inside of plate 11 is a U-Shap-ed rib; or

. flange 13, and similarly formed on the inside of plate 12 is a corresponding U-shaped flange 14, said flanges forming supports for the ends of a plurality of steam-pipes 15, capped at' each end. The steam-receivin ends of the tubesl 15 are at the discharge en of the drier, so that the greatest heat is at the point where the material is theV driest-immediately before disch'arge. Threaded or otherwise secured into the receiving end of each pipe 15 is a steam-induction pipe16', connected by any suitable separable connection, such as a union 17 and suitable piping, with a supply-main 18, the pipe 16 being removable fromthe the union 17.

Threaded or otherwise secured into the discharge end of each pipe 15 is a dischargepipe 15 upon separation of pipe 19, connected by a suitable union 20v with a discharge-main 21. Beginning with the top pipe on one arm of the U (formedby l the seri-es of pipes 15) and ending at the point about half-way up the other arm of the U, as clearly shown in Fig.` 1, the space between each pair of pipes 15 is bridged by a' produce slots 26, leading from the air-space 25'- into the interior of the chamber formed within the U of pipes 15, andthe-bridge-pieces also serve to properly space the pipes 15 and clamp vthem in position upon the U-shaped flanges 13 and 14. Beginning at the next pair of pipes beyond the last plate 22 the space between the remaining pipes are bridged by solid bridge-pieces 27, held in place by bolts 28. Leading into the upper. end ofchamber 25,A adjacent the upper end of the series of pipes 15, bridged by the bridgepieces 22, is an air-inlet duct 29, which leads from any suitable supply of air, preferably hot, and leading from the opposite .end of IOO der to thoroughly stir the drying material I prefer to use a plurality of paddles, such as that shown in Fig. 4. This paddle consists of a radial plate 35, provided at its inner end with a bolt 36, which passes radially through the conveyer-shaft and provided at its inner .end with an overlapping lip 37, between which and the main body of the plate is inserted the end of a plate 38, the two being secured together by means of a bolt or pivot 39.'I Plate 38, at its opposite end, is provided with a curved portion 40, which conforms vas nearly as possible to the curvature of the conveyer-shaft and at its end is provided with a perforation 41, through which bolt 36 is passed through a radial perforation in the conveyer-shaft and the inner end of the plate 36 brought against the shaft. The plate 38 then has its outer end inserted between lip 37 and the main body of the plate 35, while its inner end is brought to a point where the protruding end of the bolt 36 may be passed through perforation 41, the curved portion 40 of the plate 3S then hugging the conveyer-shaft. The rivet or bolt 39 is then inserted, and the whole clamped in position by means of the nut 42, screwed upon the protruding end of bolt 36. Plate 111is provided with a suitable receiving-opening 43,

f to which leads a suitable feed-spout 44, and

plate 12 is provided with a suitable discharge-opening 45, from which leads a discharge-spout 46.

In operation steam is introduced into pipes 15 and a blast of air is sent through chamber 25, a portion of said blast escaping through thev slots 26 into the interior of the U formed by the pipes 15 and moving in the direction of rotation of the conveyer-shaft, as clearly indicated in Fig. 1. The material to be dried is then introduced into the apparatus through opening 43, where it is Acaught by the conveyer and stirred and fed toward the discharge opening. The pressure of air ythrough the slots 26 is sufficient to prevent the material from passing between the pipes, and said air 1s thoroughly commmgled with- .the material, so that by the time the material has reached the discharge-opening it has been thoroughly dried.

The drying material corrodes the hot pipes 15 quite rapidly in many cases, and after a time any individual pipe may be turned so as to present a new surface between adjacent bridge-plates, and when any pipe has been. worn beyond its period of usefulness this pipe may be individually withdrawn and replaced by removing the end plate-caps 11 and 12.

l claim as my invention- 1. A drier the containingwall of which is composed of a plurality of independently rotatable pipes.

2. A drier the containing-wall of which is composed of a plurality of independentlyrotatable and separately-removable pipes.

3. A drier the containing-wall of which is composedof a plurality of independentlyrotatable and removable pipes, bridge-plates bridging the space between adjacent pipes, some of said bridge-plates having portions along one edge removed from the adjacent pipe, and a jacket externally embracing said pipes to form an air-chamber outside of said pipes.

4. A drier the containing-wall of which is composed of a plurality of independentlyrotatable pipes, bridge-plates bridging the space between said adjacent pipes, some of said bridge-plates having portions along one edge removed from the adjacent pipe, and a jacket externally embracing said pipes to form an air-chamber outside of said pipes.

5. A drier the containing-wall of which is composed of a plurality of removable heating-pipes and induction and eduction pipes leading to and from each of said pipes.

6. A drier the containing-.wall of which is composed of a plurality of independentlyrotatable heating-pipes, and induction and eduction pipes connected to each of said heating-pipes.

7. A drier, the containing-wall of which is composed. of a plurality of independentlyrotatable and separately-removable heatingpipes, and induction and eduction pipes separably connected to each of said heating-pipes.

8. A drier the containing-wall of which is composed of a plurality of independentlyrotatable and removable -heating pipes, bridge-plates bridging the space between adjacent pipes, some of said bridging-plates having portions along one edge removed from the adjacent pipe, a jacket externally embracing said pipes to form an air-chamber outside of said pipes, and induction and eduction pipes removably connected to said heating-pipes.

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9. ln a drier, a conveyer-paddle therefor i at its inner end With a erforation to receive Inwitness whereof I have hereunto set `my the protruding end o the first-mentioned hand and seal7 at Indianapolis7 Indiana, this 1o plate. 20th day of September, A. D. 1906.

10. A drier the container-Wall Qf'which is composed of a plurality of pipes and inter- [1" S'] FREDERICK G' WISELOGEL' mediate bridging-strips permitting induction Witnesses: of gases between the pi es, and a casing inv ARTHUR M. HOOD,

closing the container-Wa l. THOMAS W. MCMEANS.- 

